Unable to configure lrbd when using Cache Tiering.

This document (7017398) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Enterprise Storage 2.1

Situation

When attempting to start the iSCSI gateway (lrbd) will fail to start and the following will be returned:

Traceback (most recent call last):

File "/usr/bin/targetcli", line 82, in <module>

main()

File "/usr/bin/targetcli", line 71, in main

shell.run_cmdline(" ".join(sys.argv[1:]))

File "/usr/lib/python2.7/site-packages/configshell/shell.py", line 934, in run_cmdline

self._execute_command(path, command, pparams, kparams)

File "/usr/lib/python2.7/site-packages/configshell/shell.py", line 909, in _execute_command

result = target.execute_command(command, pparams, kparams)

File "/usr/lib/python2.7/site-packages/targetcli/ui_node.py", line 103, in execute_command

pparams, kparams)

File "/usr/lib/python2.7/site-packages/configshell/node.py", line 1416, in execute_command

result = method(*pparams, **kparams)

File "/usr/lib/python2.7/site-packages/targetcli/ui_backstore.py", line 426, in ui_command_create

ui_so = UIStorageObject(so, self)

File "/usr/lib/python2.7/site-packages/targetcli/ui_backstore.py", line 439, in __init__

UIRTSLibNode.__init__(self, name, storage_object, parent)

File "/usr/lib/python2.7/site-packages/targetcli/ui_node.py", line 172, in __init__

UINode.__init__(self, name, parent)

File "/usr/lib/python2.7/site-packages/targetcli/ui_node.py", line 46, in __init__

ConfigNode.__init__(self, name, parent, shell)

File "/usr/lib/python2.7/site-packages/configshell/node.py", line 104, in __init__

% self._name)

ValueError: Name 'rbd_disk_iamge_name' already used by a sibling.

Resolution

Please contact SUSE Customer Care to obtain a PTF that resolves the issue.

Cause

When using Cache Tiering, the iSCSI gateway (lrbd) will automatically also add the configured cache pool information to the configuration which is incorrect, resulting in it not being possible to activate lrbd.

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.